CN103008648B - Novel manufacturing method of maintenance-free chain - Google Patents
Novel manufacturing method of maintenance-free chain Download PDFInfo
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- CN103008648B CN103008648B CN201210587422.4A CN201210587422A CN103008648B CN 103008648 B CN103008648 B CN 103008648B CN 201210587422 A CN201210587422 A CN 201210587422A CN 103008648 B CN103008648 B CN 103008648B
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Abstract
The invention discloses a novel manufacturing method of a maintenance free-chain. Sand blasting treatment and steam treatment are added in the technical steps of a sleeve; meanwhile, the sleeve is heated during vacuum impregnation; and through the sand blasting treatment, the surface of the sleeve is more hardened, and the fatigue property of the sleeve is improved. A plurality of fine pits exist in the surface of the sand-blasted sleeve, so that more oil storage spaces can be provided. The steam treatment is a surface process capable of forming a compact oxidation film layer on the surface and holes of the sleeve, so that the rust resistance and the wear resistance of the sleeve are improved. Through the heating during the vacuum impregnation, lubricating oil can be preferably injected into a powder metallurgical part. In addition, the novel manufacturing method has the advantages as follows: powder materials for the sleeves are improved; the original copper powder is replaced with a raw material molybdenum powder; and first, the molybdenum powder can be used for enhancing the hardness of the metallurgical part; besides, the metallurgical part can be used for increasing the oil content of the chain.
Description
Technical field
The present invention relates to a kind of manufacture method of chain, particularly relate to the accessory of production chain as sleeve.
Background technology
At present, in the processing technology of common non-maintaining chain, be to form the carrier bar of chain, bearing pin, roller, sleeve respectively by following processing step process substantially: (1) is shaped; (2) heat treatment; (3) polishing; (4) surface treatment; Above-mentioned each parts are assembled.Above-mentioned technique is comparatively simple, and Technical comparing is outmoded, and chain will could normal operation under lubricating status, and maintenance cost is high.Application number be 01113155.1 Chinese invention patent disclose a kind of manufacture method of chain, by improving composition and engineering, making chain more wear-resisting than common roller chain, not needing frequent maintenance, extend service life.But the chain made of above-mentioned technique uses also cannot having met under the occasion of client in requirements at the higher level.So be necessary to be further improved to meet higher requirement to above-mentioned technique.
Summary of the invention
The object of the present invention is to provide the manufacture method that a kind of technique is simple, have the chain of self-lubricating property, the chain maintenance cost manufactured according to the method be low, long service life.
The present invention adopts following technical scheme:
A manufacture method for novel maintenance-free chain, presses following processing step process respectively by the carrier bar, the roller that form chain: (1) is shaped; (2) heat treatment; (3) polishing; (4) surface treatment, will form the bearing pin of chain by following processing step process: (1) is shaped; (2) heat treatment; (3) polishing; (4) plating hard chromium on surface process; To the sleeve of chain be formed by following processing step process: powder ingredients → warm-pressing formation → high temperature sintering → heat treatment → blasting treatment → steam treatment → heating in vacuum oil immersion, assembled by above-mentioned each parts, described powder ingredients presses the proportions of nickel powder 3 ~ 5%, molybdenum powder 1 ~ 5%, carbon dust 0.3 ~ 0.6%, iron powder 89.4 ~ 95.7%.
Described warm-pressing formation is under pressure 500 ~ 800Mpa, and temperature is compressing at 100 DEG C ~ 300 DEG C, and high temperature sintering refers to and to sinter in protective atmosphere and at the temperature of 1120 ~ 1200 DEG C, is incubated 0.5 hour.
Described blasting treatment is, the complete sleeve of heat treatment is put in sand-blasting machine, blast time 0.5 hour.
Described heat treatment is for heat-treat by dry cyaniding technique, carbo-nitriding temperature is 830 ~ 870 DEG C, 60 ~ 120 minutes carbo-nitriding time, penetration enhancer is mainly propane, ammonia, carbon potential can be controlled in 0.6 ~ 1.2%, carburizing part quench oil cooling but after, with 150 ~ 200 DEG C of temperature tempering 1 ~ 2 hour.
Described steam treatment is that sleeve heats and keeps 0.5 ~ 1 hour in the vapours of 500 ~ 560 DEG C.
Described heating in vacuum immersion oil technique is: be positioned over by the part after heat treatment in vacuum oil tank, and by the mode vacuumized and heat, lubricating oil is injected metallic sintered products, and wherein the heat time is 10 ~ 15 minutes, and heating-up temperature is 70 DEG C ~ 90 DEG C.
Compared with the Chinese invention patent that chain manufacture method of the present invention and application number are 01113155.1, blasting treatment and steam treatment is added in the processing step of sleeve, heat when vacuum intruded pitch, sandblasting can make sleeve surface more harden, and improves the fatigue behaviour of sleeve simultaneously simultaneously.There is much tiny pit in the sleeve surface after sandblasting, can provide more oil storage space.Steam treatment can make sleeve surface and hole form the surface treatment of one deck dense oxidation film, improves rustless property and the anti-wear performance of sleeve.Heat when vacuum intruded pitch, make lubricating oil to be better injected in metallic sintered products.In addition in technique of the present invention, the powder ingredients of sleeve is improved, and select raw material molybdenum powder to instead of original copper powder, first molybdenum powder can strengthen the hardness of metallurgical part, adopts molybdenum powder can improve the oil content of chain in addition.
Accompanying drawing explanation
The comparison diagram of Fig. 1 to be novel maintenance-free chain of the present invention and application number be Abrasion resistance test result of the common non-maintaining chain of the Chinese invention patent of 01113155.1.
Detailed description of the invention
Embodiment 1: the novel maintenance-free chain manufacture method of the present embodiment, by the carrier bar of formation chain, roller, presses following processing step process: (1) is shaped respectively; (2) heat treatment; (3) polishing; (4) surface treatment (as blackout, flange, nickel plating etc.), will form the bearing pin of chain by following processing step process: (1) is shaped; (2) heat treatment; (3) polishing; (4) plating hard chromium on surface process; To the sleeve of chain be formed by following processing step process: choose powder by atomization → powder ingredients → warm-pressing formation → high temperature sintering → heat treatment → blasting treatment → steam treatment → heating in vacuum oil immersion, above-mentioned each parts are assembled, powder ingredients presses the proportions of nickel powder 3%, molybdenum powder 1%, carbon dust 0.3%, 95.7% iron powder, and porosity reaches 12.5%.Described warm-pressing formation and high-sintering process are temperature and pressure compacting and high-sintering process: under pressure 500Mpa, temperature is compressing at 100 DEG C, and high temperature sintering refers to and to sinter in protective atmosphere and at the temperature of 1120 DEG C, is incubated 0.5 hour.Described heat treatment is for heat-treat by dry cyaniding technique, carbo-nitriding temperature is 830 DEG C, 60 minutes carbo-nitriding time, penetration enhancer is mainly propane (C3H8), ammonia (NH3), carbon potential can be controlled in 0.6%, carburizing part quench oil cooling but after, with 150 DEG C of temperature tempering 1 hour, carburizing rear surface phosphorus content was 0.8%, more than case hardness HRA65.Blasting treatment, refers to that the complete sleeve of heat treatment is put in special sand-blasting machine, blast time 0.5 hour.Sandblasting can make sleeve surface more harden, and improves the fatigue behaviour of sleeve simultaneously.There is much tiny pit in the sleeve surface after sandblasting, can provide more oil storage space.Steam treatment is that sleeve heats and keeps 0.5 hour in the vapours of 500 DEG C, makes its surface and hole form the surface treatment of one deck dense oxidation film, improves rustless property and the anti-wear performance of sleeve.Described heating in vacuum immersion oil technique is: be positioned over by the part after heat treatment in vacuum oil tank, and by the mode vacuumized and heat, powder metallurgy special lube is injected metallic sintered products, and wherein the heat time is 10 minutes, and heating-up temperature is 70 DEG C.
The Performance comparision of the sleeve (being designated as sleeve 2) that the embodiment 1 of to be the sleeve (being designated as sleeve 1) that adopts the present embodiment technical scheme to obtain and employing application number the be Chinese invention patent of 01113155.1 of form 1 below obtains:
| Part name | Hardness (HRA) | Crushing strength (Mpa) | Oil content (%) |
| Sleeve 1 | 70 | 800 | 16 |
| Sleeve 2 | 55 | 605 | 13 |
Form 1
From form 1, the hardness of sleeve 1, crushing strength and oil content are all high than sleeve 2.
Embodiment 2: the novel maintenance-free chain manufacture method of the present embodiment, by the carrier bar of formation chain, bearing pin, presses following processing step process: (1) is shaped respectively; (2) heat treatment; (3) polishing; (4) surface treatment (as blackout, flange, nickel plating etc.), will form the bearing pin of chain by following processing step process: (1) is shaped; (2) heat treatment; (3) polishing; (4) plating hard chromium on surface process; To the sleeve of chain be formed by following processing step process: choose powder by atomization → powder ingredients → warm-pressing formation → high temperature sintering → heat treatment → blasting treatment → steam treatment → heating in vacuum oil immersion, above-mentioned each parts are assembled, powder ingredients presses the proportions of nickel powder 5%, molybdenum powder 5%, carbon dust 0.6%, 89.4% iron powder, and porosity reaches 17.5%.Described warm-pressing formation and high-sintering process are temperature and pressure compacting and high-sintering process: under pressure 800Mpa, temperature is compressing at 300 DEG C, and high temperature sintering refers to and to sinter in protective atmosphere and at the temperature of 1200 DEG C, is incubated 0.5 hour.Described blasting treatment, refers to that the complete sleeve of heat treatment is put in special sand-blasting machine, blast time 0.5 hour.Sandblasting can make sleeve surface more harden, and improves the fatigue behaviour of sleeve simultaneously.There is much tiny pit in the sleeve surface after sandblasting, can provide more oil storage space.Described heat treatment is for heat-treat by dry cyaniding technique, carbo-nitriding temperature is 870 DEG C, 120 minutes carbo-nitriding time, penetration enhancer is mainly propane (C3H8), ammonia (NH3), carbon potential can be controlled in 1.2%, carburizing part quench oil cooling but after, with 200 DEG C of temperature tempering 2 hours, carburizing rear surface phosphorus content was 1.0%, more than case hardness HRA65.Described steam treatment is that sleeve heats and keeps 1 hour in the vapours of 560 DEG C, makes its surface and hole form the surface treatment of one deck dense oxidation film, improves rustless property and the anti-wear performance of sleeve.Described heating in vacuum immersion oil technique is: be positioned over by the part after heat treatment in vacuum oil tank, and by the mode vacuumized and heat, powder metallurgy special lube is injected metallic sintered products, and wherein the heat time is 15 minutes, and heating-up temperature is 90 DEG C.
The Performance comparision of the sleeve (being designated as sleeve 4) that the embodiment 2 of to be the sleeve (being designated as sleeve 3) that adopts the present embodiment technical scheme to obtain and employing application number the be Chinese invention patent of 01113155.1 of form 2 below obtains:
| Part name | Hardness (HRA) | Crushing strength (Mpa) | Oil content (%) |
| Sleeve 3 | 66 | 730 | 18 |
| Sleeve 4 | 58 | 630 | 12 |
Form 2
From form 2, the hardness of sleeve 3, crushing strength and oil content are all high than sleeve 4.
Form 3 is below novel maintenance-free self-lubricating chains (being designated as chain 1) of the present invention is non-maintaining chain (being designated as chain 2) the whole chain Performance comparision of the Chinese invention patent of 01113155.1 with original application number:
Form 3
| Time (h) | 0 | 10 | 20 | 30 | 40 | 50 |
| Chain 2 elongation (mm) | 0 | 0.36 | 0.46 | 0.85 | 0.97 | 1.7 |
| Chain 1 elongation (mm) | 0 | 0.21 | 0.37 | 0.47 | 0.54 | 0.61 |
| Chain 2 percentage elongation (%) | 0 | 0.06 | 0.08 | 0.15 | 0.17 | 0.29 |
| Chain 1 percentage elongation (%) | 0 | 0.04 | 0.06 | 0.08 | 0.09 | 0.10 |
Form 4
Fig. 1 is novel maintenance-free chain of the present invention (being designated as chain 1) is the comparison diagram of the Abrasion resistance test result of the non-maintaining chain (being designated as chain 2) of the Chinese invention patent of 01113155.1 with application number.Form 4 is comparison forms of Abrasion resistance test result.
As can be seen from Fig. 1 and form 4, the elongation of the initial stage ratio of elongation chain 2 of chain 1 will be got well, and trial curve is more stable, and the fluctuation of the curve of chain 2 is comparatively large, and the anti-wear performance of chain is stable not.
Percentage elongation: the important parameter weighing chain anti-wear performance, under the identical abrasion test time, percentage elongation is larger, illustrates that the wearability of chain is poorer.Chain wearing and tearing are in the early stage extremely important, will directly affect the service life of chain.
Conclusion: after the improvement of new technology, new technology, the properties of chain 1 is all better than chain 2.
Claims (6)
1. a manufacture method for non-maintaining chain, presses following processing step process respectively by the carrier bar, the roller that form chain: (1) is shaped; (2) heat treatment; (3) polishing; (4) surface treatment, will form the bearing pin of chain by following processing step process: (1) is shaped; (2) heat treatment; (3) polishing; (4) plating hard chromium on surface process; It is characterized in that forming the sleeve of chain by following processing step process: powder ingredients → warm-pressing formation → high temperature sintering → heat treatment → blasting treatment → steam treatment → heating in vacuum oil immersion, assembled by above-mentioned each parts, described powder ingredients presses the proportions of nickel powder 3 ~ 5%, molybdenum powder 1 ~ 5%, carbon dust 0.3 ~ 0.6%, iron powder 89.4 ~ 95.7%.
2. the manufacture method of a kind of non-maintaining chain as claimed in claim 1; it is characterized in that described warm-pressing formation is under pressure 500 ~ 800Mpa; temperature is compressing at 100 DEG C ~ 300 DEG C; high temperature sintering refers to and to sinter in protective atmosphere and at the temperature of 1120 ~ 1200 DEG C, is incubated 0.5 hour.
3. the manufacture method of a kind of non-maintaining chain as claimed in claim 1, is characterized in that described blasting treatment is, the complete sleeve of heat treatment is put in sand-blasting machine, blast time 0.5 hour.
4. the manufacture method of a kind of non-maintaining chain as claimed in claim 1, it is characterized in that described heat treatment is for heat-treat by dry cyaniding technique, carbo-nitriding temperature is 830 ~ 870 DEG C, 60 ~ 120 minutes carbo-nitriding time, penetration enhancer is propane, ammonia, carbon potential can be controlled in 0.6 ~ 1.2%, carbo-nitriding part quench oil cooling but after, with 150 ~ 200 DEG C of temperature tempering 1 ~ 2 hour.
5. the manufacture method of a kind of non-maintaining chain as claimed in claim 1, is characterized in that described steam treatment is that sleeve heats and keeps 0.5 ~ 1 hour in the vapours of 500 ~ 560 DEG C.
6. the manufacture method of a kind of non-maintaining chain as claimed in claim 1, it is characterized in that described heating in vacuum oil immersion technique is: be positioned over by the part after heat treatment in vacuum oil tank, by the mode vacuumized and heat, lubricating oil is injected metallic sintered products, wherein the heat time is 10 ~ 15 minutes, and heating-up temperature is 70 DEG C ~ 90 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210587422.4A CN103008648B (en) | 2012-12-28 | 2012-12-28 | Novel manufacturing method of maintenance-free chain |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210587422.4A CN103008648B (en) | 2012-12-28 | 2012-12-28 | Novel manufacturing method of maintenance-free chain |
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| CN103008648A CN103008648A (en) | 2013-04-03 |
| CN103008648B true CN103008648B (en) | 2015-04-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106369108B (en) * | 2015-07-22 | 2018-12-14 | 岳盟企业股份有限公司 | The pin shaft of chain |
| CN105397083A (en) * | 2015-12-03 | 2016-03-16 | 巢湖诺信建材机械装备有限公司 | Chain ring on chain |
| CN107345268A (en) * | 2017-03-20 | 2017-11-14 | 杭州自强链传动有限公司 | A kind of heat treatment method of low-carbon alloy steel chain hinge pin |
| CN108149199A (en) * | 2017-12-19 | 2018-06-12 | 环球传动泰州有限公司 | The processing method of chain axis pin peculiar to vessel |
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| JPS5913580B2 (en) * | 1978-12-11 | 1984-03-30 | 三菱マテリアル株式会社 | Manufacturing method for oil-less chain bushings |
| JPS5716147A (en) * | 1980-06-30 | 1982-01-27 | Mitsubishi Metal Corp | Sintered oil-containing roller chain bush |
| CN1219611C (en) * | 2001-06-29 | 2005-09-21 | 宣碧华 | Method for manufacturing chain |
| CN1393306A (en) * | 2001-06-29 | 2003-01-29 | 宣碧华 | Method for manufacturing chain |
| CN1218797C (en) * | 2001-06-29 | 2005-09-14 | 宣碧华 | Method for manufacturing chain |
| CN1218796C (en) * | 2001-06-29 | 2005-09-14 | 宣碧华 | Method for manufacturing chain |
| SE0401535D0 (en) * | 2004-06-14 | 2004-06-14 | Hoeganaes Ab | Sintered metal parts and method of manufacturing thereof |
| JP2009115107A (en) * | 2007-11-01 | 2009-05-28 | Tsubakimoto Chain Co | Oil-impregnated bush, oilless chain, and method of manufacturing for oil-impregnated bush |
| CN101249564B (en) * | 2008-03-26 | 2010-12-22 | 浙江中平粉末冶金有限公司 | Powder metallurgy technique |
| CN100547264C (en) * | 2008-05-14 | 2009-10-07 | 吕元之 | A kind of powder metallurgy passenger car chain pulley and preparation method thereof |
| CN101433962A (en) * | 2008-11-24 | 2009-05-20 | 苏州环球链传动有限公司 | Powder metallurgy sleeve for chain and production method |
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